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https://www.readbyqxmd.com/read/28929760/a-classic-azo-dye-agglomeration-system-evidence-for-slow-continuous-nucleation-autocatalytic-agglomerative-growth-plus-the-effects-of-dust-removal-by-microfiltration-on-the-kinetics
#1
Saim Özkar, Richard G Finke
An important but virtually ignored 1978 paper by Reeves and co-workers, which examined a dye-OAc hydrolysis and then agglomeration system, is reanalyzed in light of current state of knowledge of nucleation and growth/agglomeration phenomena. The Finke-Watzky two-step mechanism is used to account quantitatively for the kinetics data, in turn providing deconvolution of dye hydrolysis and nucleation of agglomerative growth, from the agglomerative growth step, including their separate rate constants. Significantly, the effects of microfiltration of the removable dust on the two steps and their rate constants are uncovered and quantitated for the first time, including the finding that the presence of dust accelerates both steps by ca...
September 20, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28894402/attachment-proliferation-and-morphological-properties-of-human-dermal-fibroblasts-on-ovine-tendon-collagen-scaffolds-a-comparative-study
#2
Fauzi Mh Busra, Yogeswaran Lokanathan, Masrina Mohd Nadzir, Aminuddin Saim, Ruszymah Bt Hj Idrus, Shiplu Roy Chowdhury
INTRODUCTION: Collagen type I is widely used as a biomaterial for tissue-engineered substitutes. This study aimed to fabricate different three-dimensional (3D) scaffolds using ovine tendon collagen type I (OTC-I), and compare the attachment, proliferation and morphological features of human dermal fibroblasts (HDF) on the scaffolds. METHODS: This study was conducted between the years 2014 to 2016 at the Tissue Engineering Centre, UKM Medical Centre. OTC-I was extracted from ovine tendon, and fabricated into 3D scaffolds in the form of sponge, hydrogel and film...
March 2017: Malaysian Journal of Medical Sciences: MJMS
https://www.readbyqxmd.com/read/28861309/isolation-and-in-vitro-cultivation-of-human-urine-derived-cells-an-alternative-stem-cell-source
#3
Seçil Erden Tayhan, Gönül Tezcan Keleş, İsmet Topçu, Erol Mir, Saime İsmet Deliloğlu Gürhan
OBJECTIVE: For in vitro tissue engineering in urology, stem cells are commonly isolated from tissue specimens obtained during open or endoscopic surgery. Within the context of the present study our aim was to isolate cells from human urine by an alternative and safe technique rather than using the indicated method. MATERIAL AND METHODS: After human urine samples had been collected from young and healthy donors via urethral catheterization, cells were precipitated by centrifugation and cultured...
September 2017: Turkish Journal of Urology
https://www.readbyqxmd.com/read/28857214/sexual-assault-in-the-us-military-a-comparison-of-risk-in-deployed-and-non-deployed-locations-among-operation-enduring-freedom-operation-iraqi-freedom-active-component-and-reserve-national-guard-servicewomen
#4
Anne G Sadler, Brenda M Booth, James C Torner, Michelle A Mengeling
BACKGROUND: To determine whether sexual assault in the military (SAIM) among active component and Reserve/National Guard servicewomen is more likely to occur in deployed or non-deployed locations; and which location poses greater risk for SAIM when time spent in-location is considered. METHODS: A total of 1337 Operation Enduring Freedom/Operation Iraqi Freedom era servicewomen completed telephone interviews eliciting socio-demographics, military and sexual assault histories, including attempted and completed sexual assault...
August 30, 2017: American Journal of Industrial Medicine
https://www.readbyqxmd.com/read/28844187/evaluation-of-oxidative-status-in-patients-with-chronic-periodontitis-and-polycystic-ovary-syndrome-a-cross-sectional-study
#5
Ebru Saglam, Cenk Fatih Canakcı, Saime Ozbek Sebin, Nesrin Saruhan, Metin Ingec, Hümeyra Canakcı, Ufuk Sezer
BACKGROUND: The aim of the present study was to investigate the salivary and serum 8-hydroxy-2´-deoxyguanosine (8-OHdG) and malondialdehyde (MDA) levels as well as total antioxidant status (TAS), in females with chronic periodontitis (CP) and polycystic ovary syndrome (PCOS), compared to healthy females. METHODS: Four groups, each consisting of 22 individuals, respectively women with both PCOS and CP (PCOSCP), systemically healthy women with CP (CP), periodontally healthy women with PCOS (PCOSPH) and periodontally and systemically healthy women (PH)...
August 28, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28843925/nickel-0-nanoparticles-supported-on-bare-or-coated-cobalt-ferrite-as-highly-active-magnetically-isolable-and-reusable-catalyst-for-hydrolytic-dehydrogenation-of-ammonia-borane
#6
Joydev Manna, Serdar Akbayrak, Saim Özkar
Nickel(0) nanoparticles supported on cobalt ferrite (Ni(0)/CoFe2O4), polydopamine coated cobalt ferrite (Ni(0)/PDA-CoFe2O4) or silica coated cobalt ferrite (Ni(0)/SiO2-CoFe2O4) are prepared and used as catalysts in hydrogen generation from the hydrolysis of ammonia borane at room temperature. Ni(0)/CoFe2O4 (4.0% wt. Ni) shows the highest catalytic activity with a TOF value of 38.3min(-1) in hydrogen generation from the hydrolysis of ammonia borane at 25.0±0.1°C. However, the initial catalytic activity of Ni(0)/CoFe2O4 catalyst is not preserved in subsequent runs of hydrolysis...
August 16, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28811845/role-of-contrast-enhancement-and-corrected-attenuation-values-of-renal-tumors-in-predicting-renal-cell-carcinoma-rcc-subtypes-protocol-for-a-triphasic-multi-slice-computed-tomography-ct-procedure
#7
Ersen Ertekin, Akın Soner Amasyalı, Bulent Erol, Saim Acikgozoglu, Faruk Kucukdurmaz, Alaaddin Nayman, Haluk Erol
BACKGROUND: To distinguish RCC subtypes based on contrast enhancement features of CT images. MATERIAL/METHODS: In total, 59 lesions from 57 patients were included. All patients underwent multi-slice CT imaging with a triphasic protocol, which included non-contrast, corticomedullary, nephrographic and urographic phases. Contrast enhancement features of renal masses were evaluated in terms of CT attenuation values (AV) and differences in contrast density; the aorta or renal parenchyma were evaluated based on corrected or relative values...
2017: Polish Journal of Radiology
https://www.readbyqxmd.com/read/28748902/acute-renal-failure-secondary-to-drug-related-crystalluria-and-or-drug-reaction-with-eosinophilia-and-systemic-symptom-syndrome-in-a-patient-with-metastatic-lung-cancer
#8
Saime Paydas, Mustafa Balal, Firat Kocabas, Nurettin Ay
Drug reaction with eosinophilia and systemic symptoms (DRESS) or drug-induced hypersensitivity is a severe adverse drug-induced reaction. Aromatic anticonvulsants, such as phenytoin, phenobarbital, and carbamazepine, and some drugs, can induce DRESS. Atypical crystalluria can be seen in patients treated with amoxycillin or some drugs and can cause acute renal failure. We describe a 66-year-old man who presented fever and rash and acute renal failure three days after starting amoxycillin. He was also using phenytoin because of cerebral metastatic lung cancer...
July 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28748415/role-of-plasma-derived-fibrin-on-keratinocyte-and-fibroblast-wound-healing
#9
Jia Xian Law, Shiplu Roy Chowdhury, Bin Saim Aminuddin, Binti Haji Idrus Ruszymah
Fibrin has excellent biocompatibility and biological properties to support tissue regeneration and promote wound healing. However, the role of diluted fibrin in wound healing has yet to be elucidated as it is commonly used in high concentration. This study was aimed to examine the effects of diluted plasma-derived fibrin (PDF) on keratinocyte and fibroblast wound healing in term of cell proliferation, migration, extracellular matrix (ECM) production and soluble factor secretion. Two PDF concentrations, 10 and 20% (v/v) were tested on keratinocytes and fibroblasts indirectly co-cultured in the transwell system...
July 26, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28746195/the-immediate-effect-of-facial-candling-on-inflammatory-mediators-substance-p-symptoms-severity-and-quality-of-life-in-allergic-rhinitis-patients-study-protocol-for-a-randomized-controlled-trial
#10
RANDOMIZED CONTROLLED TRIAL
Nor Faizatul Fatikah Ismail, Chin Fen Neoh, Siong Meng Lim, Amir Heberd Abdullah, Mohd Fahmi Mastuki, Kalavathy Ramasamy, Nazli Zainuddin, Lokman Saim, Long Chiau Ming
INTRODUCTION: Asian countries have a variety of ethnic groups and culture that provide their own traditional treatment in health care. Facial candling appears to be one of the popular traditional treatments in Southeast Asian. The complementary medicine practitioners promote that the facial candling treatment would help in reducing the symptoms of allergic rhinitis and other problems related to sinus. Due to the lack of evidence available, the effectiveness of this treatment method and its mechanism, however, remains unknown...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28743076/lc-ms-ms-esi-method-for-simultaneous-quantification-of-darolutamide-and-its-active-metabolite-orm-15341-in-mice-plasma-and-its-application-to-a-pharmacokinetic-study
#11
Sreekanth Dittakavi, Pavan Kumar V S P Nagasuri, Suresh P Sulochana, Syed Mohd Saim, Sadanand R Mallurwar, Mohd Zainuddin, Purushottam Dewang, Sriram Rajagopal, Ramesh Mullangi
A sensitive and rapid LC-MS/MS method was developed and validated for the simultaneous quantitation of darolutamide and its active metabolite i.e. ORM-15341 in 50μL mice plasma using bicalutamide as an internal standard (I.S.) as per regulatory guidelines. Sample processing was accomplished through liquid-liquid extraction. Chromatographic separation was achieved using an Atlantis C18 column with an isocratic mobile phase comprising 0.2% formic acid:acetonitrile (35:65, v/v) at a flow rate of 0.8mL/min within 2...
October 25, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28694395/use-of-tolvaptan-in-patients-hospitalized-for-worsening-chronic-heart-failure-with-severe-hyponatremia-the-initial-experience-at-a-single-center-in-turkey
#12
Saim Sağ, Aysel Aydın Kaderli, Abdülmecit Yıldız, Bülent Cuma Gül, Bülent Özdemir, İbrahim Baran, Sümeyye Güllülü, Ali Aydınlar, Yüksel Çavuşoğlu
OBJECTIVE: The aim of the present study was to assess the efficacy and safety of tolvaptan for severe hyponatremia (SH) in hypervolemic heart failure (HF) patients within daily clinical practice. METHODS: We restrospectively reviewed our database on tolvaptan as an add-on treatment in hypervolemic patients admitted to our clinic due to deterioration of HF and having hyponatremia resistant to standard therapy. Severe hyponatremia was defined as serum sodium concentration ≤125 mEq/L...
July 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28688559/an-evaluation-of-oxidative-and-nitrosative-stress-in-children-who-stutter-and-its-relationship-to-severity
#13
Nagihan Bilal, Selman Sarica, Ergül Belge Kurutas, Ebru Findikli, İsrafil Orhan, Erkan Oner, Adem Doganer, Saime Sagiroglu, Mehmet Akif Kilic
OBJECTIVES: Although there has been much research into the cause of stuttering, it has not yet been fully clarified. There is known to be a close relationship between stress severity and stuttering. The aim of this study was to evaluate the levels of oxidative and nitrosative stress by comparing a stuttering group and a control group. It was also aimed to evaluate the relationship between the oxidative and nitrosative stress levels and the severity of the stutter. METHODS: The study included a total of 80 individuals, comprising a study group of 40 and a control group of 40...
August 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28681690/development-of-nutrient-rich-growing-media-with-hazelnut-husk-and-municipal-sewage-sludge
#14
Omer Hulusi Dede, Saim Ozdemir
In the present study, development of structurally stable, rich in nutrients and environmentally safe growing media was carried out by combining waste material: crop residue hazelnut husk and municipal sewage sludge. In order to achieve this goal, structurally stable lignocellulosic hazelnut husk (HH) residue was mixed with nutrient-rich sewage sludge (S) in various proportions: HH 100%; HH+S1 87.5% : 12.5%; HH+S2 75% : 2 5%; HH+S3 50% : 5 0%. Following composting, the key physical, chemical and microbiological properties of the growing media were characterized for long term ornamental nursery crops...
July 6, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28666511/unilateral-external-ophthalmoplegia-arare-presentation-of-myasthenia-gravis
#15
Muhammad Saim Khan, Asad Habib, Imran Basit
Myasthenia gravis (MG) is a disease of autoimmunity with variable and diverse clinical presentations. The target tissue is neuromuscular junction of skeletal muscles, where efficient nerve impulse transmission is hampered leading to less effective muscle contraction. Patients of MG usually present with bilateral ptosis, diplopia and fatigability, which may or may not coexist with generalised weakness, dysphagia and dysarthria. A46-year male presented with unilateral ptosis and diplopia. Except for unilateral moderate ptosis and restriction of extraocular movements, ocular and systemic examination was normal...
November 2016: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28666510/homocystinuria-hc-and-neurofibromatosis-type-1-nf-1-an-unusual-presentation-in-a-child
#16
Muhammad Amer Yaqub, Muhammad Saim Khan, Asad Habib
Homocystinuria (HC) and neurofibromatosis type-1 (NF-1) are two genetically determined conditions with variable clinical manifestations. HC is a neurocutaneous autosomal recessive condition while NF-1 is an autosomal dominant phacomatosis. Both HC and NF-1 present with distinct systemic as well as ocular manifestations; however, vascular complications can occur in both the conditions. A9-year boy diagnosed case of HC along with other two siblings is reported here. He was referred by his paediatrician with decreased vision secondary to ectopia lentis...
November 2016: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28650796/comparison-of-bovine-bone-autogenic-bone-mixture-versus-platelet-rich-fibrin-for-maxillary-sinus-grafting-histologic-and-histomorphologic-study
#17
Hakan Ocak, Nukhet Kutuk, Umut Demetoglu, Esra Balcıoglu, Saim Ozdamar, Alper Alkan
Numerous grafting materials have been used to augment the maxillary sinus floor for long-term stability and success for implant-supported prosthesis. To enhance bone formation, adjunctive blood-born growth factor sources have gained popularity during the recent years. The present study compared the use of platelet-rich fibrin (PRF) and bovine-autogenous bone mixture for maxillary sinus floor elevation. A split-face model was used to apply 2 different filling materials for maxillary sinus floor elevation in 22 healthy adult sheep...
June 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28647444/spot-urine-protein-to-creatinine-ratio-to-predict-the-magnitude-of-24-hour-total-proteinuria-in-preeclampsia-of-varying-severity
#18
Umran Kucukgoz Gulec, Mete Sucu, Fatma Tuncay Ozgunen, Selim Buyukkurt, Ahmet Baris Guzel, Saime Paydas
OBJECTIVE: The predictive value of spot urine protein-to-creatinine ratio (PCR) for estimating total 24-hour proteinuria in severe preeclampsia is unclear. This study aimed to assess the diagnostic accuracy of spot urine PCR for ascertaining the magnitude of proteinuria in women with preeclampsia of varying severity. METHODS: A total of 205 patients with prediagnosed preeclampsia were included in this prospective cohort study. Patients were allocated into one of the three groups categorized by severity of disease, as follows: gestational hypertension, group 1 (n = 41); preeclampsia, group 2 (n = 88); and severe preeclampsia, group 3 (n = 76)...
June 21, 2017: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/28640625/dust-effects-on-nucleation-kinetics-and-nanoparticle-product-size-distributions-illustrative-case-study-of-a-prototype-ir-0-n-transition-metal-nanoparticle-formation-system
#19
Saim Özkar, Richard G Finke
The question is addressed if dust is kinetically important in the nucleation and growth of Ir(0)n nanoparticles formed from [Bu4N]5Na3(1,5-COD)Ir(I)·P2W15Nb3O62 (hereafter [(COD)Ir·POM](8-)), reduced by H2 in propylene carbonate solvent. Following a concise review of the (often-neglected) literature addressing dust in nucleation phenomena dating back to the late 1800s, the nucleation and growth kinetics of the [(COD)Ir·POM](8-) precatalyst system are examined for the effects of 0.2 μm microfiltration of the solvent and precatalyst solution, of rinsing the glassware with that microfiltered solvent, of silanizing the glass reaction vessel, for the addition of <0...
June 22, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28617147/therapy-for-wound-infections-after-earthquakes-requires-inclusion-of-drugs-targeting-gram-negative-bacteria
#20
Muhammed Bekçibaşı, Salih Hoşoğlu, Özcan Deveci, Saim Dayan
No abstract text is available yet for this article.
June 15, 2017: Infectious Diseases
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